Homomorphic

If it is necessary or desirable to preserve input or output port structure in homomorphic images, one must insist on a special case of homomorphism.

In this chapter two types of signature schemes satisfying homomorphic properties are presented. In the first section a description of the homomorphic signature schemes suitable in the single-user scenario is provided.

Fully homomorphic encryption (FHE) is a new encryption technique that enables computing on data blindly, without decrypting it.